20c23edb83
CC altair/tests/test_modem_helpers_altair_lte-test-modem-helpers-altair-lte.o
In file included from /usr/lib/glib-2.0/include/glibconfig.h:9,
from /usr/include/glib-2.0/glib/gtypes.h:32,
from /usr/include/glib-2.0/glib/galloca.h:32,
from /usr/include/glib-2.0/glib.h:30,
from altair/tests/test-modem-helpers-altair-lte.c:20:
altair/tests/test-modem-helpers-altair-lte.c: In function ‘test_parse_cid’:
altair/tests/test-modem-helpers-altair-lte.c:98:58: error: comparison of integer expressions of different signedness: ‘guint’ {aka ‘unsigned int’} and ‘int’ [-Werror=sign-compare]
98 | g_assert (mm_altair_parse_cid ("%CGINFO:blah", NULL) == -1);
| ^~
/usr/include/glib-2.0/glib/gmacros.h:937:25: note: in definition of macro ‘G_LIKELY’
937 | #define G_LIKELY(expr) (expr)
| ^~~~
altair/tests/test-modem-helpers-altair-lte.c:98:5: note: in expansion of macro ‘g_assert’
98 | g_assert (mm_altair_parse_cid ("%CGINFO:blah", NULL) == -1);
| ^~~~~~~~
280 lines
8.9 KiB
C
280 lines
8.9 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details:
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*
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* Copyright (C) 2013 Google Inc.
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <ModemManager.h>
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#define _LIBMM_INSIDE_MM
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#include <libmm-glib.h>
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#include "mm-modem-helpers-altair-lte.h"
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#define MM_ALTAIR_IMS_PDN_CID 1
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#define MM_ALTAIR_INTERNET_PDN_CID 3
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/*****************************************************************************/
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/* Bands response parser */
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GArray *
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mm_altair_parse_bands_response (const gchar *response)
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{
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gchar **split;
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GArray *bands;
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guint i;
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/*
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* Response is "<band>[,<band>...]"
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*/
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split = g_strsplit_set (response, ",", -1);
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if (!split)
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return NULL;
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bands = g_array_sized_new (FALSE, FALSE, sizeof (MMModemBand), g_strv_length (split));
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for (i = 0; split[i]; i++) {
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guint32 band_value;
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MMModemBand band;
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band_value = (guint32)strtoul (split[i], NULL, 10);
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band = MM_MODEM_BAND_EUTRAN_1 - 1 + band_value;
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/* Due to a firmware issue, the modem may incorrectly includes 0 in the
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* bands response. We thus ignore any band value outside the range of
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* E-UTRAN operating bands. */
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if (band >= MM_MODEM_BAND_EUTRAN_1 && band <= MM_MODEM_BAND_EUTRAN_44)
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g_array_append_val (bands, band);
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}
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g_strfreev (split);
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return bands;
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}
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/*****************************************************************************/
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/* +CEER response parser */
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gchar *
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mm_altair_parse_ceer_response (const gchar *response,
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GError **error)
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{
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g_autoptr(GRegex) r = NULL;
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g_autoptr(GMatchInfo) match_info = NULL;
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gchar *ceer_response = NULL;
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/* First accept an empty response as the no error case. Sometimes, the only
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* response to the AT+CEER query is an OK.
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*/
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if (g_strcmp0 ("", response) == 0) {
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return g_strdup ("");
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}
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/* The response we are interested in looks so:
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* +CEER: EPS_AND_NON_EPS_SERVICES_NOT_ALLOWED
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*/
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r = g_regex_new ("\\+CEER:\\s*(\\w*)?",
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G_REGEX_RAW,
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0, NULL);
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g_assert (r != NULL);
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if (!g_regex_match (r, response, 0, &match_info)) {
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g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_FAILED, "Could not parse +CEER response");
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return NULL;
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}
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if (g_match_info_matches (match_info)) {
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ceer_response = mm_get_string_unquoted_from_match_info (match_info, 1);
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if (!ceer_response)
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ceer_response = g_strdup ("");
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}
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return ceer_response;
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}
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/*****************************************************************************/
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/* %CGINFO="cid",1 response parser */
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gint
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mm_altair_parse_cid (const gchar *response, GError **error)
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{
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g_autoptr(GRegex) regex = NULL;
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g_autoptr(GMatchInfo) match_info = NULL;
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guint cid = -1;
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regex = g_regex_new ("\\%CGINFO:\\s*(\\d+)", G_REGEX_RAW, 0, NULL);
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g_assert (regex);
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if (!g_regex_match_full (regex, response, strlen (response), 0, 0, &match_info, error))
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return -1;
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if (!mm_get_uint_from_match_info (match_info, 1, &cid))
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g_set_error (error,
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MM_CORE_ERROR,
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MM_CORE_ERROR_FAILED,
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"Failed to parse %%CGINFO=\"cid\",1 response");
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return cid;
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}
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/*****************************************************************************/
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/* %PCOINFO response parser */
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MMPco *
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mm_altair_parse_vendor_pco_info (const gchar *pco_info, GError **error)
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{
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g_autoptr(GRegex) regex = NULL;
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g_autoptr(GMatchInfo) match_info = NULL;
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MMPco *pco = NULL;
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gint num_matches;
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if (!pco_info[0])
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/* No APNs configured, all done */
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return NULL;
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/* Expected %PCOINFO response:
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*
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* Solicited response: %PCOINFO:<mode>,<cid>[,<pcoid>[,<payload>]]
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* Unsolicited response: %PCOINFO:<cid>,<pcoid>[,<payload>]
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*/
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regex = g_regex_new ("\\%PCOINFO:(?:\\s*\\d+\\s*,)?(\\d+)\\s*(,([^,\\)]*),([0-9A-Fa-f]*))?",
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G_REGEX_DOLLAR_ENDONLY | G_REGEX_RAW,
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0, NULL);
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g_assert (regex);
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if (!g_regex_match_full (regex, pco_info, strlen (pco_info), 0, 0, &match_info, error)) {
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return NULL;
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}
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num_matches = g_match_info_get_match_count (match_info);
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if (num_matches != 5) {
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g_set_error (error,
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MM_CORE_ERROR,
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MM_CORE_ERROR_FAILED,
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"Failed to parse substrings, number of matches: %d",
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num_matches);
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return NULL;
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}
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while (g_match_info_matches (match_info)) {
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guint pco_cid;
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gchar *pco_id;
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gchar *pco_payload;
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gsize pco_payload_len;
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gchar *pco_payload_bytes = NULL;
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gsize pco_payload_bytes_len;
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guint8 pco_prefix[6];
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GByteArray *pco_raw;
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gsize pco_raw_len;
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if (!mm_get_uint_from_match_info (match_info, 1, &pco_cid)) {
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g_set_error (error,
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MM_CORE_ERROR,
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MM_CORE_ERROR_FAILED,
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"Couldn't parse CID from PCO info: '%s'",
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pco_info);
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break;
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}
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/* We are only interested in IMS and Internet PDN PCO. */
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if (pco_cid != MM_ALTAIR_IMS_PDN_CID && pco_cid != MM_ALTAIR_INTERNET_PDN_CID) {
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g_match_info_next (match_info, error);
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continue;
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}
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pco_id = mm_get_string_unquoted_from_match_info (match_info, 3);
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if (!pco_id) {
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g_set_error (error,
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MM_CORE_ERROR, MM_CORE_ERROR_FAILED,
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"Couldn't parse PCO ID from PCO info: '%s'",
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pco_info);
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break;
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}
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if (g_strcmp0 (pco_id, "FF00")) {
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g_free (pco_id);
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g_match_info_next (match_info, error);
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continue;
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}
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g_free (pco_id);
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pco_payload = mm_get_string_unquoted_from_match_info (match_info, 4);
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if (!pco_payload) {
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g_set_error (error,
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MM_CORE_ERROR,
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MM_CORE_ERROR_FAILED,
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"Couldn't parse PCO payload from PCO info: '%s'",
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pco_info);
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break;
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}
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pco_payload_len = strlen (pco_payload);
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if (pco_payload_len % 2 == 0)
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pco_payload_bytes = mm_utils_hexstr2bin (pco_payload, &pco_payload_bytes_len);
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g_free (pco_payload);
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if (!pco_payload_bytes) {
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g_set_error (error,
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MM_CORE_ERROR,
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MM_CORE_ERROR_FAILED,
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"Invalid PCO payload from PCO info: '%s'",
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pco_info);
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break;
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}
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/* Protocol Configuration Options (PCO) is an information element with an
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* identifier (IEI) 0x27 and contains between 3 and 253 octets. See 3GPP TS
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* 24.008 for more details on PCO.
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*
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* NOTE: The standard uses one-based indexing, but to better correlate to the
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* code, zero-based indexing is used in the description hereinafter.
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*
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* Octet | Value
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* --------+--------------------------------------------
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* 0 | PCO IEI (= 0x27)
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* 1 | Length of PCO contents (= total length - 2)
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* 2 | bit 7 : ext
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* | bit 6 to 3 : spare (= 0b0000)
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* | bit 2 to 0 : Configuration protocol
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* 3 to 4 | Element 1 ID
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* 5 | Length of element 1 contents
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* 6 to m | Element 1 contents
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* ... |
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*/
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pco_raw_len = sizeof (pco_prefix) + pco_payload_bytes_len;
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pco_prefix[0] = 0x27;
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pco_prefix[1] = pco_raw_len - 2;
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pco_prefix[2] = 0x80;
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/* Verizon uses element ID 0xFF00 for carrier-specific PCO content. */
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pco_prefix[3] = 0xFF;
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pco_prefix[4] = 0x00;
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pco_prefix[5] = pco_payload_bytes_len;
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pco_raw = g_byte_array_sized_new (pco_raw_len);
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g_byte_array_append (pco_raw, pco_prefix, sizeof (pco_prefix));
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g_byte_array_append (pco_raw, (guint8 *)pco_payload_bytes, pco_payload_bytes_len);
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g_free (pco_payload_bytes);
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pco = mm_pco_new ();
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mm_pco_set_session_id (pco, pco_cid);
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mm_pco_set_complete (pco, TRUE);
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mm_pco_set_data (pco, pco_raw->data, pco_raw->len);
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g_byte_array_unref (pco_raw);
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break;
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}
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return pco;
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}
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